Mining-machine.



`C.. E. DAVIS. Mmm@ MAcHxNE.

APPLICATWN FILED 1ULY1, LSH. l

v Patented Aug. 10, 1915.

2 SHEETS-SHEET 1.

C. E. DAVIS. Y MINING MACHINE.

APPLCATlN FILED lULY 1| 1911- 1149,503. Patented Aug. 10, 1915.

2 SHEETS-SHEET 2.

Mw/75% y @5' CHARLES E. DAVIS, F CHICAGO, ILLIN'IS, ASSIGNR TO GOODMAN-MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORTIN UF LLINOIS.

MINNG-MACHINE.

aisance.

The invention is illustrated in the accompanying drawings wherein- Figure 1 is a plan view of one forni of mining machine embodying the invention. Fig. 2 is a side elevation of the machine shown in Fig. 1. Fig. 3 is a sectional view taken on line 3-3 of F ig. 2.

Like numerals refer to like' parte throughout the several figures. l 4

In the drawingA l have illustrated a mining machine consisting of a frame 1 carrying a motor 2, and the controlling and feeding mechanism of the machine. Projectingfrom said frame is a cutter arm.3 about lwhich moves a suitable cutter chain 4i provided with a series of cutters 5. In the operation of the machine some suitable means is provided for feeding the cutters 5 toward the material to becut. As herein-'shown .the feeding mechanism comprises a' ilelxible power transmitting device 6 Whichsis Wound upon' a drum 7 an passing around a pulley 8, the outer end thereof being' fastened'to a ixedjdevice 9. The drinn is operatively connected with the motor 2 bymeans of 'the gear 10 on the shaft 11, said gear engaging vteeth l2 on the interior of the drum. F rom this construction it will be noted that when .v thedruiii 7 is rotated so as to Wind the flexible power 'transmitting device thereon, the machine will be moved laterally toward the fixed device 9. `ldfhen the machine is in opf eratiomthe cutters 5 engage the face of the material to he cut and provide a resistance so that the feeding mechanism hereinbefore described tends to pull the rear end of the machine forward more rapidly than the forward end.

suitable means is provided for prehventing' the too rapid movement of the rear yfend of the machine and to insure the proper forward feeding of the entire device. As

illustrated in the drawing, this result is y l secured by means of suitable mechanism comprising a drum 13 rotatably mounted Speeicatoii of Letters Patent.

Patented Aug. 10, 1915.

Application inea .my i` i911. seriai no. cessez.

upon the frame and flexible power trans'A mitting device 14 connected with said drum and to a fixed device 15 locatedon the opposite. side of the .machine from that on which the fixed device 9 .is located.

lSuitable means are provided for regulating the drum 13 so as to control the unwinding of the flexible power transmitting device in such a manner as to keep the machine in proper position as the feeding mechanism feeds it forwardin cutting the material. As illustrated in detail in Fig. 3, the drum 13 is fastened to a sleeve 16 mounted on the shaft 17.. A bevel gear 18 is vconnected with the sleeve 16 .so as to rotate therewith. A second bevel gear19 is loosely mounted on the sleeve 16. A gear 20 -is mounted between gears 18 and 19, the gear 20 being provided .with openings for the bevel pinions 21 and 22, said pinions being held inkplace by the pins 23. The gear 20 engages a pinion 24 on the shaft 25. The pinion 211 is operatively connected to the Worm Wheel 26 by means of the clutch device 27 when said clutch device is in the position4 shown in dotted lines, and is disconnected therefrom When the clutch is inthe position shown in full lines (see Fig. Connected With 'the bevel gear 19 is a gear 28 which 'engages the p inion29 on the shaft 30, which lug is operatively connected With the motor. A Worm 31 engages the worm gear 26 and is provided with a shaft 32 which extends rearwardly and l which is mounted in the bearings 33 and 34. This shaft is controlled by the handle 35.

The use and operation of my machine are as follows: When the machine is in open ation the rear endof machine is fed foi Ward by means of the drum 7 and flexibley 'feeding device 6, and is held back from moving forward too rapidly by means of the drum 13 and flexible device 14, the motor 2 acting to rotate `both the drum 7y and the drum 13. It is `found in practice, however, that some suitable means is necessary to compensate foi' the different speeds'at which the iiexible power transmitting device is wound upon the drum 7 and unwound from the drum 13. This variation ifi-.speed may be due to various causes, such for example as the varying diameter of the drum`13 'as the flexible power transmitting device is un Y Wound. A single rotation of the drum for example when there are two or three layers of the flexible power transmitting device thereon pays out a greater length of the power transmitting device than when there is only one layer thereon, and hence if there is no compensating mechanism the proper forward feeding of the machine is prevented. If for example the flexible feeding device l-L is unwound too rapidly, the rear end of machine will be fed forward too rapidly and the machine will therefore be moved to zin-inclined position with the cutter arm lagging behind. If, on the other hand,` the flexible power transmitting device it is uiiwound too slowly, the cutter-arm will be fed forward too rapidly and themachine will take an inclined position with the cutter arm ahead. By means of the present construction. when either one of these conditions occur it is remedied by rotating the handle B5 and the shaft l2 so as to rotate worm 3l and worm gear 2t. lf' for example` the flexible power transmitting device l-i is being unwouiid too slowly so as to lioldfback the rear end of the machine, the operator grasps the handle lli and rotates the shaft 23'.) so as to rotate the worm 31 and worm gear 2U in a direction to cause the gear Q0 .to rotate ahead of the gear 2S, thus moving the drum 13 faster than it is moved by its connection with the motor, and this is done while the drum is still connected with the motor; for when the worm gear 2G is rotated the gear 20 will be rotated, `arrying with it the piiiioiis 21, said pinions moving with relation to the gear 2S b v means of the engagement of theirfteeth with-the .teeth on said gear 2S. If, on the other hand, the flexible power transmitting device 14 is unwound too rapidly so that the rear end of machine is moved forward too rapidly, the operator rotates the shaft 32, worm 3l and worm 'gear .27 in the opposite direction, thus i'etarding the 'rotation of the drum lll or even winding some of the flexible power transmitting device thereon if necessary until the proper posit-ion of the machine is secured. It will thus be seen that by means of this compensating device the rear end of machine may bc retarded or its movement speeded up bythe operator at will and that this result is secured without disconnecting 1. A mining machine comprising a frame, a. cutter projecting therefrom, a' motor mounted on said frame', a feeding mechanism for feeding the cutter toward the material to hc acted upon, a retarding device `for rctarding the action of the feeding device. said retardingr device operatively connected with .said motor. and a manual controllingr device adapted to retard or speed up the retardingr device without disconnecting it from the motor.

2. miningl machine comprising a frame, a cutter projecting therefrom, a motor lthe retardiiig mechanism from the motor.

mounted thereon, a feeding mechanism for feeding the cutter toward the material to be acted upon, a drum rotatably mounted upon said frame. a flexible power transmit-i.

ting device wound thereabout and connected with a fixed part so as to retard the actionv 3. A mining machine comprising a frame, p

a cutter projecting therefrom, a motor mounted on lsaid frame, a feeding mechanism for feeding the cutter toward ini-- terial to be acted upon, a drum rotatably mounted on said `frame, a flexible power transmitting device connected with said drum and with a fixed part, an operetiye connection between said drum and Sm motor, and means for rotating said drum in either direction while it is connected With said motor and independent of the direction of rotation of the motor.

l. A. mining machine comprisinga frame, a cutter .projecting therefrom, a motor mounted onv said frame, a feeding mechanism for feeding the cutter toward the ma'- terial to be acted upon, a drum rotatably mounted upon said frame, a flexible power t 'ansmitting device wound about said drum and connected with a fixed part separate from said frame, an operative connection between said drinn and said motor, said connection comprising two, beveled gears, one connected with the drum so as to rotate therewith, the other adapted to rotate in dependent of' the |drum, a connection be tween said latter beveled gear and the motor. agear rotatably mounted between said bi cled gears, a beveled pinion on said gear and engaging said beveled gears, a worm wheel operatively connected with the gear carrying the beveled pinion, a worm engaging said worm wheel and a controlling part for controlling said worm.

A mining machine comprising a frame,

a cutter projecting therefrom, a mot-0r mounted on said frame, Aa feeding mechanism for feeding the cutter toward the material to be acted upon, a retaiding mechanism for retarding the aetionofthe feeding mechanism comprising a drum rotatably mounted upon said frame, a flexible power transmitting device connected withl said drum, a trainl of gear wheels operatively- .connecting said drum with the motor, and a worm and .worm wheel associated with Said train and adapted to be actuated `independent of said'motor to vary the speed of said drum.

fi. A mining machine comprising a frame, a' cutter projecting therefrom, a motor mounted on the frame, 'a feeding mechanism for feeding the cutter toward the material to be acted upon, a retarding device for retarding the action of the feeding device, said retarding device operatively connected withsaid motor, and means for varying the relative speed of the feeding device and the retarding device.

7. A mini 1g machine comprising a frame, a cutter rejecting therefrom, a motor mounted on said frame, a feeding mechanism for feeding the cutter toward the material to be acted upon comprising a drum, a flexible power transmitting device wound on said drum and adapted to be connected to a fixed part, a retarding device comprisin a drum mounted on sa1d frame, a flexi le power transmitting device Wound on said drum and adapted to be connected to a Xed part, an operative connection between both of said drums and said motor and means for varying the relative speed of said drums.

`of June, 1911.

8. A mining machine comprising a frame, a cutter rojecting, therefrom, a' motor mounted/,0 l said `frame, a feeding mechanism fori/feeding the cutter toward the material to,"y be actedl upon, a retarding mechanism for retarding the end`of the frame opposite said cutter comprising a drum rotatablmu-nted upon the frame, a flexible power/fitransniitting device connected with said a :connection between the drum and the,A motor, a Worm and W'orm Wheel operatively connected with said drum and separate lf'romtlie -connection betweenthe drum and the motor and adapted to control the speed of rotation of the drum.

Signed at Chicago, Illinois, this 22nd day CHARLES E. DAVIS.

Witnesses:

MINNIE M. LINDENAU EDNA l. Rnvwmn@ n 

